Our brain simulates reality. So, our everyday experiences are a form of dreaming, which is to say, they are mental models, simulations, not the things they appear to be.
Stephen LaBergeIn the dream state, the only essential difference from waking is the relative absence of sensory input, which makes dreaming a special case of perception without sensory input.
Stephen LaBergeSome people have vivid imagination, some not so vivid, but everybody has vivid dreams.
Stephen LaBerge